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[GH-ISSUE #27] Masquerade is required inside openvpn container #23

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opened 2026-02-25 20:30:18 +03:00 by kerem · 0 comments
kerem commented 2026-02-25 20:30:18 +03:00
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Originally created by @patachi on GitHub (May 25, 2020).
Original GitHub issue: https://github.com/adamwalach/openvpn-web-ui/issues/27

Setting the default route option (redirect-gateway def1) in client-side to redirect all traffic over the VPN it stays connected but nothing passes through even simple ping request.

And it fixed by adding masquerade rule inside openvpn container

docker exec -it openvpn /bin/bash
iptables -t nat -A POSTROUTING -s 10.0.0.0/8 -j MASQUERADE
iptables -t nat -A POSTROUTING -s 172.16.0.0/12 -j MASQUERADE
iptables -t nat -A POSTROUTING -s 192.168.0.0/16 -j MASQUERADE

Originally created by @patachi on GitHub (May 25, 2020). Original GitHub issue: https://github.com/adamwalach/openvpn-web-ui/issues/27 Setting the default route option (`redirect-gateway def1`) in client-side to redirect all traffic over the VPN it stays connected but nothing passes through even simple ping request. And it fixed by adding masquerade rule inside openvpn container `docker exec -it openvpn /bin/bash` `iptables -t nat -A POSTROUTING -s 10.0.0.0/8 -j MASQUERADE` `iptables -t nat -A POSTROUTING -s 172.16.0.0/12 -j MASQUERADE` `iptables -t nat -A POSTROUTING -s 192.168.0.0/16 -j MASQUERADE`
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